Classic 77mm Sightlines, Built to Last
The Origin OS-77 Sliding Patio Door features a classic 77 mm sightline that offers a more substantial frame aesthetic while still delivering wide, uninterrupted views. Precision-engineered in the UK, the OS-77 glides smoothly on concealed rollers and uses thermally broken aluminium with high-performance glazing for year-round comfort (U-values from 1.3 W/m²K with triple glazing). Built for durability and everyday reliability, it’s a versatile choice for modern and traditional homes alike.
*For the OS-77, U-Values as low as 1.3 W/m²K can be achieved with triple glazing and specific configurations. Actual performance will vary depending on glass type, door size, and installation. Please speak to us for tailored advice on the best setup for your project.
British Engineering Excellence
Designed and manufactured in the UK by Origin, ensuring exceptional quality and supporting British craftsmanship.
Premium-Grade
Aluminium
High-grade insulated aluminium with a durable powder-coated finish for long-lasting performance and weather resistance. Low-maintenance—just routine cleaning with mild soapy water.
Advanced Thermal Performance
Achieves U-Values as low as 1.3 W/m²K with triple glazing. Polyamide thermal breaks and comprehensive weather seals help keep your home warm in winter and cool in summer. Actual results depend on glazing and configuration.
Sophisticated
Hardware
Precision-engineered running gear with concealed tracks and optimised bearings delivers a smooth, quiet sliding action you can rely on day after day.
Ultra-Secure
Locking
Robust multi-point locking with high-security cylinders and internal glazing beads for added protection. PAS 24:2016 security available on OS-77.
High-Performance
Glass
A wide choice of glazing, including toughened and laminated options, plus low-e and triple-glazed configurations to suit performance and privacy needs.
Completely
Bespoke
Every OS-77 door is made to order—choose from 150+ RAL colours, multiple handle designs, track and panel configurations, all tailored to your space.
OS-77 Configuration Options
Available in two, three, four, or six panel configurations, the OS-77 can be tailored to suit any space with a mix of sliding and fixed panels. Doors can be designed to open from the left, right, or centre, depending on your preference. Two and three panel layouts allow flexible opening directions, while four and six panel options can create a striking centre-opening design with bi-parting operation.
Two Panel Configuration
Available with both panels sliding or one sliding, one fixed. Single track system provides 50% clear opening when open. Panels can slide in either direction (left or right) depending on your space requirements and preferred operation.
Three Panel Configuration
Multiple track system offering various sliding combinations. Can be configured with one fixed panel and two sliding panels, or three sliding panels. Sliding panels stack to either left or right side, providing up to two-thirds opening. Ideal for larger apertures.
Four Panel Configuration
Double track system with center-opening design. Two outer panels remain fixed while two center panels slide outward in opposite directions. Opens from the middle for balanced operation and optimal accessibility from both sides.
Six Panel Configuration
Triple track system with center-opening configuration. Four outer panels remain fixed while two center panels slide outward from the middle. Maximum glass area up to 6.6m wide with large central opening for maximum impact.
OS-77 Sliding Door Specifications
Spec | OS-77 |
|---|---|
Construction | Premium-grade insulated aluminium |
Manufacture Origin | United Kingdom |
Insulation | U-Value as low as 1.3 W/m²K with triple glazing |
Glazing | 28mm, 32mm or 36mm glass units available. Semi-dry glazed system |
Glazing Thickness | Up to 36mm thick |
Triple Glazing | Available |
In-glazed blinds | Optional between glass units |
Trickle Vents | Optional via 50mm add-on profile |
Frame Finish | Over 150 RAL colours available. 7 popular colours on 24-hour lead time |
Handle Finish | Bar handles in stainless steel; Patio D-handle in Anthracite, Black, Stainless Steel or White. Three handle styles available |
Panel Width | Up to 2000mm (2.0m) wide |
Panel Height | Up to 2520mm (2.52m) tall |
Maximum Panel Area | Individual panels cannot exceed 5.04m² (not 6m²) |
Maximum Aperture Width | Up to 6.6m wide (up to 11.9m for larger configurations) |
Mullion Sightline | 77mm (traditional profile) |
Panel Configurations | 2, 3, 4 or 6 panels available |
Operation Type | Inline sliding (push-pull action) |
Security Rating | PAS 24:2016 certified with multi-point locking (6 locking points) |
Track System | Double track (143mm depth) or triple track (213mm depth) |
Maximum Sash Weight | 200kg |
Warranty | Up to 10-year guarantee |
Colour Options
Hipca White 9910G
Jet Black 9005M
Dark Silver 9007M
Anthracite Grey 7016M
Black Grey 7021M
Slate Grey 7015M
Handle Options & Hardware
Choose from premium handle options designed to complement the sleek aesthetics of your OS-44 sliding doors.
All-in-One Handle
12″ (≈300 mm) combined bar handle with integrated lock and thumbturn in stainless steel. Available across OS-77 for a clean, integrated look.
Architectural Bar Handle
Slim, modern bar-handle styling that gives secure grip and a refined finish. Pairs neatly with the OS-77’s more substantial 77 mm sightline.
Offset Bar Handle Option
500 mm offset bar for extra leverage and fingertip control, paired with a separate high-security lock (thumbturn). Available on OS-77 in stainless, black, white, or bronze finishes.
Marine-Grade Hardware
Stainless-steel hardware and fixings engineered for durability and corrosion resistance, delivering long-lasting performance in all weather conditions.
Key Features & Benefits
The Origin OS-77 pairs classic 77 mm sightlines with rock-solid performance. Precision-engineered in the UK, it delivers wide views, a smooth, secure sliding action, and a more substantial frame presence for modern or traditional homes.
Classic 77 mm Mullion
Traditional 77 mm sightlines add presence and rigidity while maintaining generous glass areas and clear views.
Smooth Slide Operation
Concealed running gear and perfectly weighted bearings provide a quiet, effortless glide—day after day.
Advanced Thermal Efficiency
Thermally broken aluminium, comprehensive weather seals, and high-performance glazing help keep heat in during winter and out in summer. U-values from 1.3 W/m²K with triple glazing.
Durable Powder-Coated Finish
High-grade powder coating creates a tough, smooth surface that resists weathering and colour fade. Choose from 150+ RAL colours, with 7 popular finishes on fast lead times.
High-Security Locking
Robust multi-point locking with high-security cylinders and internal glazing beads for added protection. PAS 24:2016 security available on OS-77.
British Manufacturing
Designed, engineered, manufactured and supported in the UK for consistent quality and dependable lead times.
Why Choose Origin OS-77 Over Other Systems?
The OS-77 Sliding Patio Door combines classic 77 mm sightlines with smooth inline operation—offering practical advantages over bifold, French, and lift-and-slide setups.
Cleaner Views Than Bifold Doors
Unlike bifolds that fold into the opening, the OS-77 slides within its track, preserving floor space and keeping wide views clear whether open or closed. The 77 mm profile complements both modern and traditional homes.
Engineered Aluminium Advantage
Premium-grade aluminium with a robust 77 mm profile provides rigidity for large panes and low maintenance. Polyamide thermal breaks and high-performance glazing support excellent energy efficiency; PAS 24 security available.
Wider Spans Than French Doors
Large sliding panels and centre-opening options create broader clear openings with fewer vertical interruptions than hinged French sets, while modern weather seals help keep the elements out.
Simpler Than Lift & Slide
A straightforward inline sliding mechanism—no lift cams or complex gearing—means easy, reliable operation and a smooth, quiet glide with minimal upkeep.
Introducing the all-new OS-29+
Experience the next generation of slimline design with the OS-29+.
Featuring enhanced thermal efficiency, flush stacking and refined aesthetics, the OS-29+ delivers in both style and performance for the long-term.
Speak to us about this range!
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